<template>
  <div class="container">
    <div class="app-container">
      <!-- :expand-on-click-node 点击树不可以折叠，只有点击折叠展开图标才可以-->
      <el-tree default-expand-all :data="depts" :props="defaultProps" :expand-on-click-node="false">

        <!-- v-slot="{node, data}" 只能作用在template -->
        <template v-slot="{data}">
          <el-row style="width:100%;height:40px" type="flex" justify="space-between" align="middle">
            <el-col>{{ data.name }}</el-col>
            <!-- 使用 el-col 组件创建一个列容器，设置宽度为 4 个栅格单位。 -->
            <el-col :span="4">
              <span class="tree-manager">
                {{ data.managerName }}
              </span>
              <!-- $event实参，表示点击菜单传出来的类型-->
              <el-dropdown @command="operateDept($event, data.id)">
                <!-- 显示区域 -->
                <span class="el-dropdown-link">
                  操作<i class="el-icon-arrow-down el-icon--right" />
                </span>
                <!-- 下拉菜单选项 -->
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                  <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                  <el-dropdown-item command="del">删除</el-dropdown-item>

                </el-dropdown-menu>
              </el-dropdown>

            </el-col>
          </el-row>
        </template>

      </el-tree>

    </div>

    <!-- 放置弹层 -->
    <!-- .sync 表示会接收子组件的事件， update:showDialog:值 -->
    <AddDept
      ref="addDept"
      :show-dialog.sync="showDialog"
      :current-node-id="currentNodeId"
      :title="title"
      @updateDepartment="getDepartment"
    />

  </div>
</template>

<script>
import { delDepartment, getDepartment } from '@/api/department'
import { transListToTreeData } from '@/utils'
import AddDept from './components/add-dept.vue'

export default {
  name: 'Department',
  components: { AddDept },
  data() {
    return {
      // depts: [{
      //   name: '传智教育',
      //   managerName: '张三',
      //   children: [
      //     { name: '总裁办', managerName: '李四' },
      //     { name: '行政部', managerName: '王五' },
      //     { name: '财务部', managerName: '赵六' }
      //   ]
      // }],
      depts: [],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      showDialog: false,
      currentNodeId: null, // 存储当前点击的id
      title: '' // 传入子组件的标题
    }
  },
  created() {
    this.getDepartment() // 调用获取数据的接口
  },
  methods: {
    async getDepartment() {
      const result = await getDepartment()
      // this.depts = result
      this.depts = transListToTreeData(result, 0)
    },
    operateDept(type, id) {
      console.log(type)
      console.log(id)
      if (type === 'add') {
        // 添加子部门
        this.showDialog = true // 显示弹层
        this.currentNodeId = id
        this.title = 'add'
      } else if (type === 'edit') {
        // 编辑部门场景
        this.showDialog = true
        this.currentNodeId = id // 记录id要用它获取数据
        this.title = 'edit'
        // 更新props - 异步动作
        // 直接调用子组件的方法，同步的方法
        // 要在子组件获取数据，父组件调用子组件方法来获取数据
        this.$nextTick(() => {
          this.$refs.addDept.getDepartmentDetail()
        })
      } else {
        // 删除部门
        this.$confirm('您确认要删除该部门吗').then(async() => {
          await delDepartment(id)

          // 提示消息
          this.$message.success('删除部门成功')
          this.getDepartment()
        })
      }
    }
  }

}
</script>

<style scoped>

.app-container {
  padding: 30px 140px;
  font-size: 14px
}

.tree-manager{
  width: 50px;
  display: inline-block;
  /* margin: 10px; */
  margin: 10px 30px 10px 10px;
}

</style>
